CN109483678A - A kind of three-dimensional bleaching process of the complete timber of large scale - Google Patents
A kind of three-dimensional bleaching process of the complete timber of large scale Download PDFInfo
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- CN109483678A CN109483678A CN201811582548.6A CN201811582548A CN109483678A CN 109483678 A CN109483678 A CN 109483678A CN 201811582548 A CN201811582548 A CN 201811582548A CN 109483678 A CN109483678 A CN 109483678A
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- timber
- large scale
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- dimensional
- bleaching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/02—Staining or dyeing wood; Bleaching wood
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses a kind of three-dimensional bleaching process of the complete timber of large scale, comprising the following steps: S01 prepares delignification solution, prepares delignification solution using sodium hydroxide, sodium sulfite and deionized water；The complete timber of large scale is put into delignification solution, is heated using boiling water bath by S02；S03 takes out timber after a period of time, is transferred in freshly prepd delignification solution, if significant change still occurs for the color of delignification solution, repeats this step, until the color of delignification solution takes out timber after being no longer changed substantially after transfer；Timber is put into container by S04, and deionized water is slowly added into container and rinses timber, until the pH value of the deionized water in container is essentially neutrality；S05 is to be added in hydrogen peroxide in neutral timber and use heating water bath after cleaning to S04, until timber is by full bleaching.A kind of three-dimensional bleaching process of the complete timber of large scale provided by the invention can guarantee that the three-dimensional uniformly mild bleaching of the complete timber of large scale and outside organization's structure are not destroyed.
Description
Technical field
The present invention relates to a kind of three-dimensional bleaching process of the complete timber of large scale, belong to wood processing field.
Background technique
Timber have many advantages, such as it is porous, light, environmentally friendly, have excellent absorption property, be suitable for processing exhaust gas, waste water,
There is good absorption to grease, can be also used for the fields such as the chemical industry of gas and medicine refining.With the hair of science and technology
Exhibition, timber is by the substrate as many high performance materials.Such as pure water filtering substrate, grease adsorbent material substrate, big
The substrate etc. of the transparent timber of size.But these materials must be using the timber of complete three-dimensional bleaching as substrate, therefore, how not
The complete three-dimensional bleaching timber of large scale is prepared on the basis of destruction wood structure becomes a urgent problem.
The basic chromophoric group of timber is the carbonyl and carboxyl of phenyl ring, quinones, lignin benzene oxide monomer side chain, and carbon-to-carbon is double
Chain.In addition, the presence of the auxochrome groups such as hydroxyl (- OH) and methoxyl group also makes timber be easy to change colour.Therefore, with energy in destruction timber
The chromophoric group of visible light and the chemical agent with oxidisability or reproducibility of closing auxochrome group are absorbed, bleaching can be generated
Decolorization.
Wood Bleaching is using redox reaction, by chromophoric group, the auxochrome group and related with coloring in timber
Constituent aoxidized, restored, degrade destruction to achieve the purpose that decoloration.As oxidized form bleaching agent hydrogen peroxide and
Hydrogenperoxide steam generator pH value is often adjusted to alkalinity by sodium chlorite, and sodium chlorite aqueous solution's pH value is adjusted to acidity, to make it
Oxidation bleaching ability significantly increase.The various aqueous solutions of the rongalite of reduced form bleaching agent hydrazine hydrate, in heating feelings
Reducing bleach ability greatly reinforces under condition.
The bleaching of above-mentioned bleaching agent and method for bleaching to wood surface is usually only applicable to, timber complete for large scale,
Usually because bleaching process is swift in response acutely, occurs inside after bleaching completely outside timber after bleaching process and do not floated yet
After white or wood internal full bleaching, it is bleached the case where excessively institutional framework being caused to be destroyed outside timber, directly limits
Its application range.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, provide a kind of completely wooden for large scale
Superficial bleaching is excessive in the bleaching process of material and inside is not bleached problem yet, can guarantee that the complete timber of large scale is three-dimensional uniformly
The three-dimensional bleaching process for the complete timber of large scale that mild bleaching and outside organization's structure are not destroyed.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of three-dimensional bleaching process of the complete timber of large scale, comprising the following steps:
S01 prepares delignification solution, prepares delignification solution using sodium hydroxide, sodium sulfite and deionized water；
The complete timber of large scale is put into S01 in prepared delignification solution, is heated using boiling water bath by S02；
S03 takes out timber after a period of time, is transferred in freshly prepd delignification solution, if the face of delignification solution
Significant change still occurs for color, then repeats this step, until the color of delignification solution takes after being no longer changed substantially after transfer
Timber out；
S04, the timber taken out in S03 is put into container, be slowly added into container deionized water rinse timber, and with
When measurement container in deionized water pH value, until container in deionized water pH value be essentially neutrality；
S05 is that heating water bath is added in hydrogen peroxide and used in neutral timber after cleaning to S04, until timber quilt
Until full bleaching.
In S01, the mass fraction of sodium hydroxide is 5~15%, and the mass fraction of sodium sulfite is 3~7%.
In S02, the size of the complete timber of large scale is 5cm × 5cm × 1cm to 25cm × 25cm × 5cm.
In S05, the time of heating water bath is 5~100 hours.
In S05, the mass fraction of hydrogen peroxide is 10~30%.
In S05, the temperature of heating water bath is 70~80 DEG C.
Beneficial effects of the present invention:
(1) from surface to entirety, the solid bleaching to the three-dimensional of the complete timber of large scale is realized；
(2) bleaching process is mild, solves existing plane bleaching technology in the three-dimensional bleaching process of large scale timber
Outside timber after bleaching completely it is internal be not bleached yet or wood internal full bleaching after, being bleached outside timber excessively leads to group
Knit destructurized situation；
(3) increase the purposes of timber, such as pure water filtering substrate, to prepare grease adsorbent material, large scale transparent
The substrate etc. of timber.
Specific embodiment
The present invention will be further described below with reference to examples, and following embodiment is only used for clearly illustrating this hair
Bright technical solution, and not intended to limit the protection scope of the present invention.
Specific embodiment 1
Step 1 prepares delignification solution, prepares delignification solution using sodium hydroxide, sodium sulfite and deionized water.
Wherein, the mass fraction of sodium hydroxide is 5~15%, preferably 5%, and the mass fraction of sodium sulfite is 3~7%, preferably
3%.
The complete timber of large scale is put into step 1 in prepared delignification solution by step 2, using boiling water bath plus
Heat.Wherein, the size of the complete timber of large scale be 5cm × 5cm × 1cm to 25cm × 25cm × 5cm, preferably 5cm × 5cm ×
1cm。
Step 3 takes out timber after a period of time, is transferred in freshly prepd delignification solution, if delignification solution
Significant change still occurs for color, then repeats this step, until after the color of delignification solution is no longer changed substantially after transfer
Timber is taken out, the lignin in timber is removed substantially at this time.
Step 4, the timber taken out in step 3 is put into container, and deionized water is slowly added into container and rinses wood
Material, and the pH value of deionized water in container is measured at any time, until the pH value of the deionized water in container is essentially neutrality.Hydrogen peroxide
Under acid alkaline condition all very acutely to the bleaching action of timber, only reaction is mild in neutral conditions, thus can be with
It carries out the complete Wood Bleaching process of large scale slowly, its internal structure will not be destroyed.
Step 5 is that heating water bath is added in hydrogen peroxide and used in neutral timber after cleaning to step 4, up to
Timber is by until full bleaching.Wherein, the time of heating water bath is 5~100h, preferably 5h.The mass fraction of hydrogen peroxide is 10
~30%, preferably 10%.The bleaching of timber is both for the bleaching on its surface in the prior art, and superficial bleaching is in order to accelerate
The bleaching speed of hydrogen peroxide can all use boiling water bath, be not particularly suited for the complete timber of large scale of the application.Big ruler in the application
It is 70~80 DEG C, preferably 70 DEG C that very little complete timber, which takes the temperature of heating water bath,.
Specific embodiment 2
Step 1 prepares delignification solution, prepares delignification solution using sodium hydroxide, sodium sulfite and deionized water.
Wherein, the mass fraction of sodium hydroxide is 5~15%, preferably 10%, and the mass fraction of sodium sulfite is 3~7%, preferably
5%.
The complete timber of large scale is put into step 1 in prepared delignification solution by step 2, using boiling water bath plus
Heat.Wherein, the size of the complete timber of large scale is 5cm × 5cm × 1cm to 25cm × 25cm × 5cm, preferably 15cm × 15cm
×3cm。
Step 3 takes out timber after a period of time, is transferred in freshly prepd delignification solution, if delignification solution
Significant change still occurs for color, then repeats this step, until after the color of delignification solution is no longer changed substantially after transfer
Timber is taken out, the lignin in timber is removed substantially at this time.
Step 4, the timber taken out in step 3 is put into container, and deionized water is slowly added into container and rinses wood
Material, and the pH value of deionized water in container is measured at any time, until the pH value of the deionized water in container is essentially neutrality.Hydrogen peroxide
Under acid alkaline condition all very acutely to the bleaching action of timber, only reaction is mild in neutral conditions, thus can be with
It carries out the complete Wood Bleaching process of large scale slowly, its internal structure will not be destroyed.
Step 5 is that heating water bath is added in hydrogen peroxide and used in neutral timber after cleaning to step 4, up to
Timber is by until full bleaching.Wherein, the time of heating water bath is 5~100 hours, preferably 30 hours.The quality of hydrogen peroxide
Score is 10~30%, preferably 20%.Bleaching of the bleaching of timber both for its surface in the prior art, and superficial bleaching
Boiling water bath can be all used in order to accelerate the bleaching speed of hydrogen peroxide, is not particularly suited for the complete timber of large scale of the application.This Shen
Please in the complete timber of large scale take heating water bath temperature be 70~80 DEG C, preferably 75 DEG C.
Specific embodiment 3
Step 1 prepares delignification solution, prepares delignification solution using sodium hydroxide, sodium sulfite and deionized water.
Wherein, the mass fraction of sodium hydroxide is 5~15%, preferably 15%, and the mass fraction of sodium sulfite is 3~7%, preferably
7%.
The complete timber of large scale is put into step 1 in prepared delignification solution by step 2, using boiling water bath plus
Heat.Wherein, the size of the complete timber of large scale is 5cm × 5cm × 1cm to 25cm × 25cm × 5cm, preferably 25cm × 25cm
×5cm。
Step 3 takes out timber after a period of time, is transferred in freshly prepd delignification solution, if delignification solution
Significant change still occurs for color, then repeats this step, until after the color of delignification solution is no longer changed substantially after transfer
Timber is taken out, the lignin in timber is removed substantially at this time.
Step 4, the timber taken out in step 3 is put into container, and deionized water is slowly added into container and rinses wood
Material, and the pH value of deionized water in container is measured at any time, until the pH value of the deionized water in container is essentially neutrality.Hydrogen peroxide
Under acid alkaline condition all very acutely to the bleaching action of timber, only reaction is mild in neutral conditions, thus can be with
It carries out the complete Wood Bleaching process of large scale slowly, its internal structure will not be destroyed.
Step 5 is that heating water bath is added in hydrogen peroxide and used in neutral timber after cleaning to step 4, up to
Timber is by until full bleaching.Wherein, the time of heating water bath is 5~100 hours, preferably 100 hours.The quality of hydrogen peroxide
Score is 10~30%, preferably 30%.Bleaching of the bleaching of timber both for its surface in the prior art, and superficial bleaching
Boiling water bath can be all used in order to accelerate the bleaching speed of hydrogen peroxide, is not particularly suited for the complete timber of large scale of the application.This Shen
Please in the complete timber of large scale take heating water bath temperature be 70~80 DEG C, preferably 80 DEG C.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of three-dimensional bleaching process of the complete timber of large scale, it is characterised in that: the following steps are included:
S01 prepares delignification solution, prepares delignification solution using sodium hydroxide, sodium sulfite and deionized water；
The complete timber of large scale is put into S01 in prepared delignification solution, is heated using boiling water bath by S02；
S03 takes out timber after a period of time, is transferred in freshly prepd delignification solution, if the color of delignification solution is still
Significant change occurs, then repeats this step, until taking out wood after the color of delignification solution is no longer changed substantially after transfer
Material；
S04, the timber taken out in S03 is put into container, and deionized water is slowly added into container and rinses timber, and is surveyed at any time
The pH value of deionized water in container is measured, until the pH value of the deionized water in container is essentially neutrality；
S05 is that heating water bath is added in hydrogen peroxide and used in neutral timber after cleaning to S04, until timber is complete
Until bleaching.
2. a kind of three-dimensional bleaching process of the complete timber of large scale according to claim 1, it is characterised in that: in S01, hydrogen
The mass fraction of sodium oxide molybdena is 5~15%, and the mass fraction of sodium sulfite is 3~7%.
3. a kind of three-dimensional bleaching process of the complete timber of large scale according to claim 1, it is characterised in that: in S02, greatly
The size of the complete timber of size is 5cm × 5cm × 1cm to 25cm × 25cm × 5cm.
4. a kind of three-dimensional bleaching process of the complete timber of large scale according to claim 1, it is characterised in that: in S05, water
The time of bath heating is 5~100 hours.
5. a kind of three-dimensional bleaching process of the complete timber of large scale according to claim 1, it is characterised in that: double in S05
The mass fraction of oxygen water is 10~30%.
6. a kind of three-dimensional bleaching process of the complete timber of large scale according to claim 1, it is characterised in that: in S05, water
The temperature of bath heating is 70~80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811582548.6A CN109483678A (en) | 2018-12-24 | 2018-12-24 | A kind of three-dimensional bleaching process of the complete timber of large scale |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811582548.6A CN109483678A (en) | 2018-12-24 | 2018-12-24 | A kind of three-dimensional bleaching process of the complete timber of large scale |
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| CN201811582548.6A Pending CN109483678A (en) | 2018-12-24 | 2018-12-24 | A kind of three-dimensional bleaching process of the complete timber of large scale |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171044A (en) * | 2019-06-20 | 2019-08-27 | 南京林业大学 | A kind of preparation method of multi-pore structure functional form wood substrate |
| CN112125375A (en) * | 2020-09-23 | 2020-12-25 | 东北林业大学 | Preparation method of palladium-wood film capable of synchronously performing oil-water separation and dye degradation |
| WO2023221285A1 (en) * | 2022-05-20 | 2023-11-23 | 苏州大学 | Photocatalytic microreactor and preparation method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3013575A1 (en) * | 2016-02-04 | 2017-08-10 | University Of Maryland, College Park | Transparent wood composite, systems and method of fabrication |
| CN107511900A (en) * | 2017-07-12 | 2017-12-26 | 宜华生活科技股份有限公司 | Preparation method using delignification timber as the heat-sensitive variable colour phase-change accumulation energy timber of raw material |
| CN108568876A (en) * | 2017-03-14 | 2018-09-25 | 南京新莱尔材料科技有限公司 | A kind of method of Quick wood pre-bleaching processing |
| CN108724384A (en) * | 2018-07-25 | 2018-11-02 | 东北林业大学 | A kind of preparation method of self-luminous timber that is while storing thermal energy and luminous energy |
-
2018
- 2018-12-24 CN CN201811582548.6A patent/CN109483678A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3013575A1 (en) * | 2016-02-04 | 2017-08-10 | University Of Maryland, College Park | Transparent wood composite, systems and method of fabrication |
| CN108568876A (en) * | 2017-03-14 | 2018-09-25 | 南京新莱尔材料科技有限公司 | A kind of method of Quick wood pre-bleaching processing |
| CN107511900A (en) * | 2017-07-12 | 2017-12-26 | 宜华生活科技股份有限公司 | Preparation method using delignification timber as the heat-sensitive variable colour phase-change accumulation energy timber of raw material |
| CN108724384A (en) * | 2018-07-25 | 2018-11-02 | 东北林业大学 | A kind of preparation method of self-luminous timber that is while storing thermal energy and luminous energy |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110171044A (en) * | 2019-06-20 | 2019-08-27 | 南京林业大学 | A kind of preparation method of multi-pore structure functional form wood substrate |
| CN110171044B (en) * | 2019-06-20 | 2021-04-13 | 南京林业大学 | Preparation method of functional wood base material with porous structure |
| CN112125375A (en) * | 2020-09-23 | 2020-12-25 | 东北林业大学 | Preparation method of palladium-wood film capable of synchronously performing oil-water separation and dye degradation |
| WO2023221285A1 (en) * | 2022-05-20 | 2023-11-23 | 苏州大学 | Photocatalytic microreactor and preparation method therefor |
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Application publication date: 20190319 |
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